Betekenis van:
hafnium

hafnium
Zelfstandig naamwoord
  • hafnium
  • a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons

Synoniemen

Hyperoniemen


Voorbeeldzinnen

  1. hafnium oxide (hafnia) (HfO2);
  2. Tetrakis (Ethylmethylamino) hafnium (IV)
  3. Hafnium oxide (hafnia) (HfO2);
  4. Dimethyl[dimethylsilyldiindenyl]hafnium
  5. 55 Dimethyl[dimethylsilyldiindenyl]hafnium
  6. Glass, including fused silica, phosphate glass, fluorophosphate glass, zirconium fluoride (ZrF4) and hafnium fluoride (HfF4), having all of the following:
  7. For the purpose of this entry, transition metals are: scandium, vanadium, manganese, cobalt, copper, yttrium, niobium, hafnium, tungsten, titanium, chromium, iron, nickel, zinc, zirconium, molybdenum and tantalum.
  8. glass, including fused silica, phosphate glass, fluorophosphate glass, zirconium fluoride (ZrF4) and hafnium fluoride (HfF4) and having all of the following:
  9. Glass, including fused silica, phosphate glass, fluorophosphate glass, zirconium fluoride (ZrF4) and hafnium fluoride (HfF4) and having all of the following:
  10. Beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium (columbium), rhenium, thallium, articles of these metals, powders, waste and scrap (excluding carbide)
  11. ’MCrAlX’ refers to a coating alloy where M equals cobalt, iron, nickel or combinations thereof and X equals hafnium, yttrium, silicon, tantalum in any amount or other intentional additions over 0,01 % by weight in various proportions and combinations, except:
  12. ’Sensor window materials’, as follows: alumina, silicon, germanium, zinc sulphide, zinc selenide, gallium arsenide, diamond, gallium phosphide, sapphire and the following metal halides: sensor window materials of more than 40 mm diameter for zirconium fluoride and hafnium fluoride.
  13. Throughout the nomenclature, the expression ‘base metals’ means: iron and steel, copper, nickel, aluminium, lead, zinc, tin, tungsten (wolfram), molybdenum, tantalum, magnesium, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium (columbium), rhenium and thallium.